| Commit | Line | Data |
|---|
| 463ee0b2 |
1 | /* |
| 2 | * sdbm - ndbm work-alike hashed database library |
| 3 | * based on Per-Ake Larson's Dynamic Hashing algorithms. BIT 18 (1978). |
| 4 | * author: oz@nexus.yorku.ca |
| 5 | * status: public domain. |
| 6 | */ |
| 7 | #define DBLKSIZ 4096 |
| 8 | #define PBLKSIZ 1024 |
| 9 | #define PAIRMAX 1008 /* arbitrary on PBLKSIZ-N */ |
| 10 | #define SPLTMAX 10 /* maximum allowed splits */ |
| 11 | /* for a single insertion */ |
| 12 | #define DIRFEXT ".dir" |
| 13 | #define PAGFEXT ".pag" |
| 14 | |
| 15 | typedef struct { |
| 16 | int dirf; /* directory file descriptor */ |
| 17 | int pagf; /* page file descriptor */ |
| 18 | int flags; /* status/error flags, see below */ |
| 19 | long maxbno; /* size of dirfile in bits */ |
| 20 | long curbit; /* current bit number */ |
| 21 | long hmask; /* current hash mask */ |
| 22 | long blkptr; /* current block for nextkey */ |
| 23 | int keyptr; /* current key for nextkey */ |
| 24 | long blkno; /* current page to read/write */ |
| 25 | long pagbno; /* current page in pagbuf */ |
| 26 | char pagbuf[PBLKSIZ]; /* page file block buffer */ |
| 27 | long dirbno; /* current block in dirbuf */ |
| 28 | char dirbuf[DBLKSIZ]; /* directory file block buffer */ |
| 29 | } DBM; |
| 30 | |
| 31 | #define DBM_RDONLY 0x1 /* data base open read-only */ |
| 32 | #define DBM_IOERR 0x2 /* data base I/O error */ |
| 33 | |
| 34 | /* |
| 35 | * utility macros |
| 36 | */ |
| 37 | #define sdbm_rdonly(db) ((db)->flags & DBM_RDONLY) |
| 38 | #define sdbm_error(db) ((db)->flags & DBM_IOERR) |
| 39 | |
| 40 | #define sdbm_clearerr(db) ((db)->flags &= ~DBM_IOERR) /* ouch */ |
| 41 | |
| 42 | #define sdbm_dirfno(db) ((db)->dirf) |
| 43 | #define sdbm_pagfno(db) ((db)->pagf) |
| 44 | |
| 45 | typedef struct { |
| 46 | char *dptr; |
| 47 | int dsize; |
| 48 | } datum; |
| 49 | |
| 50 | extern datum nullitem; |
| 51 | |
| 52 | #ifdef __STDC__ |
| 53 | #define proto(p) p |
| 54 | #else |
| 55 | #define proto(p) () |
| 56 | #endif |
| 57 | |
| 58 | /* |
| 59 | * flags to sdbm_store |
| 60 | */ |
| 61 | #define DBM_INSERT 0 |
| 62 | #define DBM_REPLACE 1 |
| 63 | |
| 64 | /* |
| 65 | * ndbm interface |
| 66 | */ |
| 67 | extern DBM *sdbm_open proto((char *, int, int)); |
| 68 | extern void sdbm_close proto((DBM *)); |
| 69 | extern datum sdbm_fetch proto((DBM *, datum)); |
| 70 | extern int sdbm_delete proto((DBM *, datum)); |
| 71 | extern int sdbm_store proto((DBM *, datum, datum, int)); |
| 72 | extern datum sdbm_firstkey proto((DBM *)); |
| 73 | extern datum sdbm_nextkey proto((DBM *)); |
| 74 | |
| 75 | /* |
| 76 | * other |
| 77 | */ |
| 78 | extern DBM *sdbm_prep proto((char *, char *, int, int)); |
| 79 | extern long sdbm_hash proto((char *, int)); |
| 80 | |
| 81 | #ifndef SDBM_ONLY |
| ff68c719 |
82 | #define dbm_open sdbm_open |
| 83 | #define dbm_close sdbm_close |
| 84 | #define dbm_fetch sdbm_fetch |
| 85 | #define dbm_store sdbm_store |
| 86 | #define dbm_delete sdbm_delete |
| 87 | #define dbm_firstkey sdbm_firstkey |
| 88 | #define dbm_nextkey sdbm_nextkey |
| 89 | #define dbm_error sdbm_error |
| 90 | #define dbm_clearerr sdbm_clearerr |
| 463ee0b2 |
91 | #endif |
| 85e6fe83 |
92 | |
| 93 | /* Most of the following is stolen from perl.h. */ |
| 94 | #ifndef H_PERL /* Include guard */ |
| 95 | |
| 96 | /* |
| 97 | * The following contortions are brought to you on behalf of all the |
| 98 | * standards, semi-standards, de facto standards, not-so-de-facto standards |
| 99 | * of the world, as well as all the other botches anyone ever thought of. |
| 100 | * The basic theory is that if we work hard enough here, the rest of the |
| 101 | * code can be a lot prettier. Well, so much for theory. Sorry, Henry... |
| 102 | */ |
| 103 | |
| 104 | #include <errno.h> |
| 105 | #ifdef HAS_SOCKET |
| 106 | # ifdef I_NET_ERRNO |
| 107 | # include <net/errno.h> |
| 108 | # endif |
| 109 | #endif |
| 110 | |
| 85e6fe83 |
111 | #if defined(__STDC__) || defined(_AIX) || defined(__stdc__) || defined(__cplusplus) |
| 112 | # define STANDARD_C 1 |
| 113 | #endif |
| 114 | |
| 85e6fe83 |
115 | #include <stdio.h> |
| 116 | #include <ctype.h> |
| 117 | #include <setjmp.h> |
| 118 | |
| 119 | #ifdef I_UNISTD |
| 120 | #include <unistd.h> |
| 121 | #endif |
| 122 | |
| 137443ea |
123 | #if !defined(MSDOS) && !defined(WIN32) |
| 85e6fe83 |
124 | # ifdef PARAM_NEEDS_TYPES |
| 125 | # include <sys/types.h> |
| 126 | # endif |
| 127 | # include <sys/param.h> |
| 128 | #endif |
| 129 | |
| 130 | #ifndef _TYPES_ /* If types.h defines this it's easy. */ |
| 131 | # ifndef major /* Does everyone's types.h define this? */ |
| 132 | # include <sys/types.h> |
| 133 | # endif |
| 134 | #endif |
| 135 | |
| 85e6fe83 |
136 | #include <sys/stat.h> |
| 137 | |
| 138 | #ifndef SEEK_SET |
| 139 | # ifdef L_SET |
| 140 | # define SEEK_SET L_SET |
| 141 | # else |
| 142 | # define SEEK_SET 0 /* Wild guess. */ |
| 143 | # endif |
| 144 | #endif |
| 145 | |
| 146 | /* Use all the "standard" definitions? */ |
| 94b6baf5 |
147 | #if defined(STANDARD_C) && defined(I_STDLIB) |
| 85e6fe83 |
148 | # include <stdlib.h> |
| 85e6fe83 |
149 | #endif /* STANDARD_C */ |
| 150 | |
| a0d0e21e |
151 | #define MEM_SIZE Size_t |
| 152 | |
| 55497cff |
153 | /* This comes after <stdlib.h> so we don't try to change the standard |
| 154 | * library prototypes; we'll use our own instead. */ |
| 155 | |
| 156 | #if defined(MYMALLOC) && (defined(HIDEMYMALLOC) || defined(EMBEDMYMALLOC)) |
| 157 | |
| 158 | # ifdef HIDEMYMALLOC |
| 159 | # define malloc Mymalloc |
| 160 | # define calloc Mycalloc |
| 161 | # define realloc Myremalloc |
| 162 | # define free Myfree |
| 163 | # endif |
| 164 | # ifdef EMBEDMYMALLOC |
| 165 | # define malloc Perl_malloc |
| 166 | # define calloc Perl_calloc |
| 167 | # define realloc Perl_realloc |
| 168 | # define free Perl_free |
| 169 | # endif |
| 170 | |
| 1e7d9bb3 |
171 | Malloc_t malloc proto((MEM_SIZE nbytes)); |
| 172 | Malloc_t calloc proto((MEM_SIZE elements, MEM_SIZE size)); |
| 173 | Malloc_t realloc proto((Malloc_t where, MEM_SIZE nbytes)); |
| 174 | Free_t free proto((Malloc_t where)); |
| 55497cff |
175 | |
| 176 | #endif /* MYMALLOC && (HIDEMYMALLOC || EMBEDMYMALLOC) */ |
| 177 | |
| a0d0e21e |
178 | #ifdef I_STRING |
| 179 | #include <string.h> |
| 180 | #else |
| 181 | #include <strings.h> |
| 182 | #endif |
| 183 | |
| 184 | #ifdef I_MEMORY |
| 185 | #include <memory.h> |
| f0f333f4 |
186 | #endif |
| 187 | |
| 188 | #ifdef __cplusplus |
| 189 | #define HAS_MEMCPY |
| a0d0e21e |
190 | #endif |
| 191 | |
| 85e6fe83 |
192 | #ifdef HAS_MEMCPY |
| 193 | # if !defined(STANDARD_C) && !defined(I_STRING) && !defined(I_MEMORY) |
| 194 | # ifndef memcpy |
| 1e7d9bb3 |
195 | extern char * memcpy proto((char*, char*, int)); |
| 85e6fe83 |
196 | # endif |
| 197 | # endif |
| 198 | #else |
| 199 | # ifndef memcpy |
| 200 | # ifdef HAS_BCOPY |
| 201 | # define memcpy(d,s,l) bcopy(s,d,l) |
| 202 | # else |
| 203 | # define memcpy(d,s,l) my_bcopy(s,d,l) |
| 204 | # endif |
| 205 | # endif |
| 206 | #endif /* HAS_MEMCPY */ |
| 207 | |
| 208 | #ifdef HAS_MEMSET |
| 209 | # if !defined(STANDARD_C) && !defined(I_STRING) && !defined(I_MEMORY) |
| 210 | # ifndef memset |
| 1e7d9bb3 |
211 | extern char *memset proto((char*, int, int)); |
| 85e6fe83 |
212 | # endif |
| 213 | # endif |
| 214 | # define memzero(d,l) memset(d,0,l) |
| 215 | #else |
| 216 | # ifndef memzero |
| 217 | # ifdef HAS_BZERO |
| 218 | # define memzero(d,l) bzero(d,l) |
| 219 | # else |
| 220 | # define memzero(d,l) my_bzero(d,l) |
| 221 | # endif |
| 222 | # endif |
| 223 | #endif /* HAS_MEMSET */ |
| 224 | |
| 36477c24 |
225 | #if defined(mips) && defined(ultrix) && !defined(__STDC__) |
| 226 | # undef HAS_MEMCMP |
| 227 | #endif |
| 228 | |
| 229 | #if defined(HAS_MEMCMP) && defined(HAS_SANE_MEMCMP) |
| 85e6fe83 |
230 | # if !defined(STANDARD_C) && !defined(I_STRING) && !defined(I_MEMORY) |
| 231 | # ifndef memcmp |
| 1e7d9bb3 |
232 | extern int memcmp proto((char*, char*, int)); |
| 85e6fe83 |
233 | # endif |
| 234 | # endif |
| 36477c24 |
235 | # ifdef BUGGY_MSC |
| 236 | # pragma function(memcmp) |
| 237 | # endif |
| 85e6fe83 |
238 | #else |
| 239 | # ifndef memcmp |
| 36477c24 |
240 | # /* maybe we should have included the full embedding header... */ |
| 241 | # ifdef NO_EMBED |
| 242 | # define memcmp my_memcmp |
| 243 | # else |
| 244 | # define memcmp Perl_my_memcmp |
| 245 | # endif |
| f0f333f4 |
246 | #ifndef __cplusplus |
| 1e7d9bb3 |
247 | extern int memcmp proto((char*, char*, int)); |
| f0f333f4 |
248 | #endif |
| 85e6fe83 |
249 | # endif |
| 250 | #endif /* HAS_MEMCMP */ |
| 251 | |
| 85e6fe83 |
252 | #ifndef HAS_BCMP |
| 253 | # ifndef bcmp |
| 254 | # define bcmp(s1,s2,l) memcmp(s1,s2,l) |
| 255 | # endif |
| 36477c24 |
256 | #endif /* !HAS_BCMP */ |
| 257 | |
| 258 | #ifdef HAS_MEMCMP |
| 259 | # define memNE(s1,s2,l) (memcmp(s1,s2,l)) |
| 260 | # define memEQ(s1,s2,l) (!memcmp(s1,s2,l)) |
| 261 | #else |
| 262 | # define memNE(s1,s2,l) (bcmp(s1,s2,l)) |
| 263 | # define memEQ(s1,s2,l) (!bcmp(s1,s2,l)) |
| 264 | #endif |
| 85e6fe83 |
265 | |
| 266 | #ifdef I_NETINET_IN |
| 267 | # include <netinet/in.h> |
| 268 | #endif |
| 269 | |
| 270 | #endif /* Include guard */ |
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